TDA5250D2 Datasheet, PDF (30/97 Pages) Infineon Technologies AG – ASK/FSK 868MHz Wireless Transceiver

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TDA 5250 D2
preliminary
Functional Description
Table 3-22 Sub Address 08H: RSSI_TH3
Bit
Function
Description
Default
D7
not used
1
D6
SELECT
0= VCC, 1= RSSI
1
D5
TH3_5
1
D4
TH3_4
1
D3
TH3_3
1
D2
TH3_2
1
D1
TH3_1
1
D0
TH3_0
1
Table 3-23 Sub Address 0DH: CLK_DIV
Bit
Function
Default
D7
not used
0
D6
not used
0
D5
DIVMODE_1
0
D4
DIVMODE_0
0
D3
CLKDIV_3
1
D2
CLKDIV_2
0
D1
CLKDIV_1
0
D0
CLKDIV_0
0
Table 3-24 Sub Address 0EH: XTAL_CONFIG
Bit
Function
Description
D7
D6
D5
D4
D3
D2
FSK-Ramp 0
D1
FSK-Ramp 1
D0
Bipolar_FET
not used
not used
not used
not used
not used
only in bipolar mode
0= FET, 1=Bipolar
Table 3-25 Sub Address 0FH: BLOCK_PD
Bit Function
Description
D15 REF_PD
D14 RC_PD
D13 WINDOW_PD
D12 ADC_PD
D11 PEAK_DET_PD
D10 DATA_SLIC_PD
D9 DATA_FIL_PD
D8 QUAD_PD
D7 LIM_PD
D6 I/Q_FIL_PD
D5 MIX2_PD
D4 MIX1_PD
D3 LNA_PD
D2 PA_PD
D1 PLL_PD
D0 XTAL_PD
1= power down Band Gap Reference
1= power down RC Oscillator
1= power down Window Counter
1= power down ADC
1= power down Peak Detectors
1= power down Data Slicer
1= power down Data Filter
1= power down Quadri Correlator
1= power down Limiter
1= power down I/Q Filters
1= power down I/Q Mixer
1= power down 1st Mixer
1= power down LNA
1= power down Power Amplifier
1= power down PLL
1= power down XTAL Oscillator
Default
0
0
0
0
0
0
0
1
Default
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Table 3-26 Sub Address 80H: STATUS
Function
Bit
Description
D7 COMP_LOW
1 if data rate < TH1
D6 COMP_IN
1 if TH1 < data rate < TH2
D5 COMP_HIGH
1 if TH2 < data rate
D4 COMP_0,5*LOW 1 if data rate < 0,5*TH1
D3 COMP_0,5*IN 1 if 0,5*TH1 < data rate < 0,5*TH2
D2 COMP_0,5*HIGH 1 if 0,5*TH2 < data rate
D1 RSSI=TH3
1 if RSSI value is equal TH3
D0 RSSI>TH3
1 if RSSI value is greater than TH3
Table 3-27 Sub Address 81H: ADC
Function
Bit
Description
D7 PD_ADC
D6 SELECT
D5 RSSI_5
D4 RSSI_4
D3 RSSI_3
D2 RSSI_2
D1 RSSI_1
D0 RSSI_0
ADC power down feedback Bit
SELECT feedback Bit
RSSI value Bit5
RSSI value Bit4
RSSI value Bit3
RSSI value Bit2
RSSI value Bit1
RSSI value Bit0
Wireless Components
3 - 20
Specification, July 2002